Electric drill
United States Patent 2299881

Inventors:
Demo, Max J.
Publication Date:
10/27/1942
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Assignee:
Demo, Max J.
Primary Class:
173/75
Other Classes:
173/19, 173/46, 173/109, 173/74, 173/203, 173/170, 173/145, 173/129, 173/117, 175/217, 175/87, 175/51
International Classes:
E21B19/081; E21B21/01; E21B19/00; E21B21/00